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KVM x86: Move kvm cpuid support out of svm

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Memory encryption support does not have module parameter dependencies
and can be moved into the general x86 cpuid __do_cpuid_ent function.
This changes maintains current behavior of passing through all of
CPUID.8000001F.

Suggested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Peter Gonda <pgonda@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Gonda 2019-11-21 12:33:43 -08:00 committed by Paolo Bonzini
parent 9671024729
commit c1de0f2522
2 changed files with 5 additions and 7 deletions
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5
arch/x86/kvm/cpuid.c
View File

@ -778,6 +778,11 @@ static inline int __do_cpuid_func(struct kvm_cpuid_entry2 *entry, u32 function,
case 0x8000001a:
case 0x8000001e:
break;
/* Support memory encryption cpuid if host supports it */
case 0x8000001F:
if (!boot_cpu_has(X86_FEATURE_SEV))
entry->eax = entry->ebx = entry->ecx = entry->edx = 0;
break;
/*Add support for Centaur's CPUID instruction*/
case 0xC0000000:
/*Just support up to 0xC0000004 now*/

7
arch/x86/kvm/svm.c
View File

@ -5958,13 +5958,6 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
if (npt_enabled)
entry->edx |= F(NPT);
break;
case 0x8000001F:
/* Support memory encryption cpuid if host supports it */
if (boot_cpu_has(X86_FEATURE_SEV))
cpuid(0x8000001f, &entry->eax, &entry->ebx,
&entry->ecx, &entry->edx);
}
}